C++26: more constexpr in the core language

a year ago

C++11 introduced constexpr, with limited functionality like no if/else or loops.
C++14 expanded constexpr to include if/else and loops.
C++17 added support for constexpr lambdas.
C++20 allowed allocation and use of std::vector and std::string in constexpr.
C++26 introduces constexpr cast from void* (P2738R1), enabling standard library functions like std::format to work at compile time.
C++26 adds constexpr placement new (P2747R2), allowing more flexible initialization in constant expressions.
C++26 supports constexpr structured bindings and references (P2686R5), with relaxed restrictions on storage duration.
Future articles will cover constexpr exceptions and standard library updates.

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